I don't read much manga myself (and most of what I read is only because I liked the anime), but of the few I HAVE read that have not been animated, I think Eden: Its An Endless World would be radical if someone animated it.

Ah I just read the description of this on wiki/MAL. Psychological, drama, and mystery in a game like setting? Sounds good.

Going to add this to read list. I'm basically hunting down any manga that has not been adapted into anime right now to read

It's all about the money, money, money!

A masterpiece.
Death Note who?

Aha after reading your comments about Liar Game I had to check it out! I have to say I am really enjoying it! It is probably the only manga I have read that has ever come close to the level of psychological brilliance that I got from Death Note! I am up to the bit where they are just going to begin round 3!